Abstract

The optical pyrometer is a widely used instrument for measuring the temperature of gas turbine blade targets. However, one of the limitations of this instrument is the measurement error caused by reflected radiation from the high-temperature surrounding environment. This paper presents an analysis of such measurement error with consideration of a wavelength detection range of 2.5 to 22 μm with blade thermal barrier coatings (TBCs) ranging from 18 to 279 μm. Surface temperature distributions were simulated using the software ANSYS CFX. Radiation heat transfer was calculated based on discretized triangular surface elements. The variation characteristics of relative temperature error under different wavelengths and TBC thicknesses were obtained. The results obtained are well suited to provide theoretical guidance for choosing the wavelength of a pyrometer when measuring blade temperature with different TBC thickness, and can also be used to provide a method for estimating and correcting the temperature error.

© 2019 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Fiber-coupled LWIR hyperspectral sensor suite for non-contact component surface temperature measurements

Paul S. Hsu, Keith Rein, Bibik Oleksandr, David Wu, Timothy S. Cook, Subodh Adhikari, Benjamin Emerson, Timothy Lieuwen, James R. Gord, and Sukesh Roy
Appl. Opt. 57(36) 10418-10425 (2018)

Modeling luminescence behavior for phosphor thermometry applied to doped thermal barrier coating configurations

Quentin Fouliard, Sandip Haldar, Ranajay Ghosh, and Seetha Raghavan
Appl. Opt. 58(13) D68-D75 (2019)

Radiation temperature measurement method for semitransparent materials using one-channel infrared pyrometer

Tairan Fu, Jiangfan Liu, and Anzhou Zong
Appl. Opt. 53(29) 6830-6839 (2014)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (3)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription